This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 7 |
| 3 | 11 |
| 4 | 23 |
| 5 | 31 |
| 6 | 191 |
| 7 | 409 |
| 8 | 1151 |
| 9 | 2161 |
| 10 | 2689 |
| 11 | 3361 |
| 12 | 4729 |
| 13 | 9601 |
| 14 | 14281 |
| 15 | 23209 |
| 16 | 31249 |
| 17 | 33049 |
| 18 | 55441 |
| 19 | 71761 |
| 20 | 110881 |
| 21 | 2116921 |
| 22 | 3384481 |
| 23 | 5109721 |
| 24 | 222855361 |
| 25 | 288940681 |
| 26 | 567719161 |
| 27 | 831143041 |
| 28 | 899978641 |